Capital gains tax question here

[Ayo O.]

Hello BP,

I will be selling a house that use to be my primary residence from 2009-2015.I am being made to sell to a railway company through eminent domain.The house became a rental from 2015 till date.

I was wondering if the proceeds of the sale would still be capital gains exempt since I lived there for 2 out of the last 4.5 years regardless that it is now a rental property?